Resolution:
AppManage exit code list is provided in Appendix B of the TIBCO Runtime Agent™ Scripting Deployment User’s Guide. Here is the mapping to their  numeric values:

    SUCCEEDED = 0;
    FAILURE_USAGE_ERROR = -1;
    FAILURE_APPLICATION_NOT_EXIST = -2;
    FAILURE_UNEXPECTED_EXCEPTION = -3;
    FAILURE_UNEXPECTED_THROWABLE = -4;
    FAILURE_SERVICE_NOT_EXIST = -5;
    FAILURE_BINDING_NOT_EXIST = -6;
    FAILURE_HAWK_MICROAGENT = -7;
    FAILURE_HAWK_CONSOLE = -8;
    FAILURE_NO_MACHINE_ASSOCIATED_WITH_PROCESS = -9;
    FAILURE_PARSING_XSD = -10;
    FAILURE_PARSING_XML = -11;
    FAILURE_VALIDATION = -12;
    FAILURE_NOT_AUTHORIZED = -13;
    FAILURE_NOT_AUTHENTICATED = -14;
    FAILURE_DOMAIN_NOT_INSTALLED = -15;
    FAILURE_DOMAIN_MASTER_SERVER_DOWN = -16;
    FAILURE_GET_ARCHIVE = -17;
    FAILURE_BATCH = -18;
    FAILURE_APPLICATION_NOT_DEPLOYED = -19;
    FAILURE_UPLOAD_GENRAL = -20;
    FAILURE_UPLOAD_COMMIT = -21;
    FAILURE_UPLOAD_APPLICATION_ARCHIVE = -22;
    FAILURE_ERROR_EXECUTING_EAR_PLUGIN = -24;
    FAILURE_CONFIG_ERROR_GENERAL = -30;
    FAILURE_CONFIG_COMMIT = -31;
    FAILURE_CONFIG_FILE_PARSE_ERROR = -32;
    FAILURE_CONFIG_FILE_READ_ERROR = -33;
    FAILURE_CONFIG_FILE_NOT_EXIST = -34;
    FAILURE_NO_UPLOADED_ARCHIVE = -35;
    FAILURE_INVALID_REPO_INSTANCE = -36;
    FAILURE_DEPLOY_GENERAL = -40;
    FAILURE_DEPLOY_COMMIT = -41;
    FAILURE_NOT_DEPLOYABLE_STATE = -42;
    FAILURE_DEPLOYMENT_STATUS = -43;
    FAILURE_UNDEPLOY_GENERAL = -50;
    FAILURE_UNDEPLOY_COMMIT = -51;
    FAILURE_DELETE_GENERAL = -60;
    FAILURE_DELETE_COMMIT = -61;
    FAILURE_DEPLOYED_STATE = -62;
    FAILURE_EXPORT_GENERAL = -70;
    FAILURE_XML_SERIALIZE = -71;
    FAILURE_EXPORT_FILE_NAME_ERROR = -72;
    FAILURE_MERGE_ERROR = -73;
    FAILURE_EXPORT_EAR_ERROR = -74;
    FAILURE_START_GENERAL = -80;
    FAILURE_STOP_GENERAL = -90;
    FAILURE_STOP_NOT_IN_STOPPABLE_STATE = -91;
    FAILURE_KILL_GENERAL = -100;
    FAILURE_TRUNCATE_GENERAL = -110;
    SKIPPED = -254;